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[195.171.43.25]) by mx.google.com with ESMTP id pk3si10210696wjc.168.2014.02.03.09.19.51 for ; Mon, 03 Feb 2014 09:19:51 -0800 (PST) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1WAMcd-00059O-Hl for rs_out_1@blacksheep.org; Mon, 03 Feb 2014 16:43:47 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1WAMcd-00059F-4P for rsgb_lf_group@blacksheep.org; Mon, 03 Feb 2014 16:43:47 +0000 Received: from relay2.uni-heidelberg.de ([129.206.210.211]) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.77) (envelope-from ) id 1WAMcb-0002oi-IH for rsgb_lf_group@blacksheep.org; Mon, 03 Feb 2014 16:43:46 +0000 Received: from freitag.iup.uni-heidelberg.de (freitag.iup.uni-heidelberg.de [129.206.29.204]) by relay2.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id s13Ghi0i027613 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Mon, 3 Feb 2014 17:43:44 +0100 Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de [129.206.22.206]) by freitag.iup.uni-heidelberg.de (8.12.11.20060308/8.11.2) with ESMTP id s13GhihH005442 for ; Mon, 3 Feb 2014 17:43:44 +0100 Message-ID: <52EFC73B.2000407@iup.uni-heidelberg.de> Date: Mon, 03 Feb 2014 17:43:39 +0100 From: =?windows-1252?Q?Stefan_Sch=E4fer?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <000f01cf1d9e$700b49e0$0802a8c0@acer> <52EA67D4.3060604@iup.uni-heidelberg.de> <08be01cf1de6$5b817c90$128475b0$@comcast.net> <52EBB90D.6040101@iup.uni-heidelberg.de> <52ED24D7.8030405@iup.uni-heidelberg.de> <52EFB70D.2000403@iup.uni-heidelberg.de> <0E3A350E-CC94-4417-B008-5FB204F962C6@gmail.com> In-Reply-To: <0E3A350E-CC94-4417-B008-5FB204F962C6@gmail.com> X-MIME-Autoconverted: from 8bit to quoted-printable by relay2.uni-heidelberg.de id s13Ghi0i027613 X-Spam-Score: -2.8 (--) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hello John, VLF, Am 03.02.2014 17:23, schrieb John Rabson: > >> this does not feel wrong, or does it? And if so, why? Comments please! Thus i think the analogy is NOT "leaving your car across the exit from the local fire station" Or, explain which service is in analogy to the local fire station here?? >> > I recall an offshore broadcasting station in the North Sea which inadvertently tuned up on its second harmonic (2182 kHz – the distress and calling frequency for marine radio telephony). It rendered the frequency unusable for more than half an hour, preventing coast stations from Niton through Scheveningen to Humber monitoring for distress calls. > > In any case, what counts in the end is not the letter of the law but the attitude of the enforcement agency in the country concerned. > > John F5VLF > [...] Content analysis details: (-2.8 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [129.206.210.211 listed in list.dnswl.org] -0.5 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain X-Scan-Signature: f62c7cf8eeb8e5a327b71719e9bffff1 Subject: Re: LF: DX VLF experiments in 3HD Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: quoted-printable X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false Hello John, VLF, Am 03.02.2014 17:23, schrieb John Rabson: > >> this does not feel wrong, or does it? And if so, why? Comments please!= Thus i think the analogy is NOT "leaving your car across the exit from t= he local fire station" Or, explain which service is in analogy to the loc= al fire station here?? >> =20 > I recall an offshore broadcasting station in the North Sea which inadve= rtently tuned up on its second harmonic (2182 kHz =96 the distress and ca= lling frequency for marine radio telephony). It rendered the frequency un= usable for more than half an hour, preventing coast stations from Niton t= hrough Scheveningen to Humber monitoring for distress calls. > > In any case, what counts in the end is not the letter of the law but th= e attitude of the enforcement agency in the country concerned. > > John F5VLF > =20 ...but here were are talking about a concrete frequency of 17265 Hz,=20 which i assume is not a calling frequency for maritine radio telephony.=20 And, we're talking about defined power levels in the range on a few=20 100uW. If you try to receive such a signal in 10km distance, you will=20 see that the 50Hz harmonic QRM is higher, in most locations... 73, Stefan